This requires a power source and onboard control circuitry, both of which dramatically increase the complexity and fragility of a weapon. Bimorphs or stripe / stack actuators can produce currents in the micro and milli amps range but generate a much smaller voltage. The most common form of electronically-fired ammo runs an electric current through a resistor taking the place of primer, and that resistor heating up supplies the thermal energy necessary to ignite the propellant. Piezo igniters that are used in BBQ grills produce hundreds to thousands of volts but produce low amounts of currents/amps in the range of nano or micro amps. Note that in the real world, electronically-fired guns do not use piezoelectric systems. And at that point, instead of designing a firearm to have a firing pin which strikes a piezoelectric crystal which triggers a primer which in turn ignites the propellant, why not simplify the design and omit the piezoelectric crystal entirely? So, even for a piezoelectric system, you're going to need a primer. This is why primers exist they produce a quick burst of heat sufficient to ignite the propellant. Firearm propellants are designed to be stable, which is an important part of making them combust at a controlled rate rather than detonating inside the gun, so they are difficult to ignite via electricity or shock by design. There's just one problem with using that electricity to set off modern, smokeless propellant. If the goal is to produce weapons with as few moving parts as needed, piezoelectric ignition is a step backwards.Įlectronic ignition has been done before, but specifically piezoelectric ignition implies striking a piezoelectric crystal with a hammer, producing electricity which sets off the round. The people there are gearing for war and want to mass produce firearms with as few moving parts as needed without compromising their effectiveness in combat.
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